(09-26-1989 9:52am UNIQUE.EXE)
UNIQUE Filter reads lines from sorted standard input.
If duplicate lines exist, NONE of the duplicate lines are returned.
(i.e.: only the lines which are "unique" to the file are returned)
Usage: [options]
Options: (Either - or / may preceed options)
-I = Ignore upper/lower case distinctions
-C = Return count (only) of lines found
-N = Return line numbers
-+n = Starting position (column) of KEY (ex: /+25)
-Ln = Length of KEY (ex: /L5)